Auto-Tagging and fix for custom prompts

What's Changed

• Fix GH Action for PRs from forks by @icereed in #23
• Specific error messages for missing environment variables by @JonasHess in #21
• Feature/exponential backoff for auto processing by @JonasHess in #26
• Fix prompts mount by @icereed in #30

New Contributors

• @JonasHess made their first contribution in #21

Full Changelog: v0.3.0...v0.4.0